
    //显示灰色 jQuery 遮罩层
    function showBg() {
        var bh = $("body").height();
        var bw = $("body").width();
        $("#fullbg").css({
            height: bh,
            width: bw,
            display: "block"
        });
        $("#dialog").show();
    }
    //关闭灰色 jQuery 遮罩
    function closeBg() {
        $("#fullbg,#dialog").hide();
    } 
    /**
	 // 浮动对话框
    $(document).ready(function() {
        var domThis = $('#dialog')[0];
        var wh = $(window).height() / 2; 
        $("body").css({
            "background-image": "url(about:blank)",
            "background-attachment": "fixed"
        });
        domThis.style.setExpression('top', 'eval((document.documentElement).scrollTop + ' + wh + ') + "px"');
    });  
    **/ 
	function codeChange(){ 
		$("#airlineCode").get(0).selectedIndex=$("#airlineName").get(0).selectedIndex;
	//	alert($("#airlineCode").get(0).selectedIndex);
		//alert($("#airlineCode option:selected").val());
	} 		